EP0907258A3 - Compression de signaux audio, compression de signaux de parole et reconnaissance de la parole - Google Patents

Compression de signaux audio, compression de signaux de parole et reconnaissance de la parole Download PDF

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Publication number
EP0907258A3
EP0907258A3 EP98118674A EP98118674A EP0907258A3 EP 0907258 A3 EP0907258 A3 EP 0907258A3 EP 98118674 A EP98118674 A EP 98118674A EP 98118674 A EP98118674 A EP 98118674A EP 0907258 A3 EP0907258 A3 EP 0907258A3
Authority
EP
European Patent Office
Prior art keywords
audio signal
signal
frequency
input audio
signal compression
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98118674A
Other languages
German (de)
English (en)
Other versions
EP0907258A2 (fr
EP0907258B1 (fr
Inventor
Yoshihisa Nakatoh
Takeshi Norimatsu
Mineo Tsushima
Tomokazu Ishikawa
Mitsuhiko Serikawa
Taro Katayama
Junichi Nakahashi
Junko Yagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP0907258A2 publication Critical patent/EP0907258A2/fr
Publication of EP0907258A3 publication Critical patent/EP0907258A3/fr
Application granted granted Critical
Publication of EP0907258B1 publication Critical patent/EP0907258B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/665—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using psychoacoustic properties of the ear, e.g. masking effect
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
EP98118674A 1997-10-03 1998-10-02 Compression de signaux audio, compression de signaux de parole et reconnaissance de la parole Expired - Lifetime EP0907258B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP27094597 1997-10-03
JP27094597 1997-10-03
JP270945/97 1997-10-03
JP6500598 1998-03-16
JP65005/98 1998-03-16
JP6500598 1998-03-16

Publications (3)

Publication Number Publication Date
EP0907258A2 EP0907258A2 (fr) 1999-04-07
EP0907258A3 true EP0907258A3 (fr) 2004-01-02
EP0907258B1 EP0907258B1 (fr) 2007-01-03

Family

ID=26406147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98118674A Expired - Lifetime EP0907258B1 (fr) 1997-10-03 1998-10-02 Compression de signaux audio, compression de signaux de parole et reconnaissance de la parole

Country Status (5)

Country Link
US (2) US6311153B1 (fr)
EP (1) EP0907258B1 (fr)
KR (1) KR100361883B1 (fr)
CA (1) CA2249792C (fr)
DE (1) DE69836785T2 (fr)

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JP5355387B2 (ja) * 2007-03-30 2013-11-27 パナソニック株式会社 符号化装置および符号化方法
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Also Published As

Publication number Publication date
DE69836785T2 (de) 2007-04-26
KR100361883B1 (ko) 2003-01-24
DE69836785D1 (de) 2007-02-15
US20010044727A1 (en) 2001-11-22
US6311153B1 (en) 2001-10-30
US6477490B2 (en) 2002-11-05
EP0907258A2 (fr) 1999-04-07
CA2249792A1 (fr) 1999-04-03
CA2249792C (fr) 2009-04-07
KR19990036857A (ko) 1999-05-25
EP0907258B1 (fr) 2007-01-03

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